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  • Can I eat before wisdom teeth removal?

    I'm getting all 4 wisdom teeth remove tomorrow morning and I'm wondering if I can eat breakfast before. I'm pretty sure I'm getting anesthesia/laughing gas if that matters.

    2 AnswersDental7 years ago
  • Statistics: What is the variable of interest?

    Psychology experiments sometimes involve testing the ability of rats to navigate mazes. The mazes are classified according to difficulty, as measured by the mean length of time it takes to find the food at the end. One researcher needs a maze that will take rats an average of one minute to solve. He tests one maze on 18 rats. Is there evidence that this maze is "too easy" or "too difficult" (implying taking something other than one minute to solve, on average)?

    I think the variable of interest is the difficulty of the maze and that its a categorical variable. The population is all mazes. Not sure If I'm right.

    1 AnswerMathematics7 years ago
  • My taxable marital status is married but I'm single?

    I'm a college student working summer job and paid around total of $1k this summer. Do I need to file taxes with that small amount and should I let my supervisor know about me being single so they would change my marital status?

    6 AnswersUnited States7 years ago
  • Can you correct these sentences with punctuation?

    periods, commas, semi-colons, colons. Thanks

    1. So far the new virus has sickened at least 33 people, killing nine.

    2. Access to the genetic information in the viruses he adds is necessary for understanding how the virus is evolving and for developing a candidate vaccine to prevent infection.

    3. Seed germination is based on 3 factors

    a. light

    b. temperature

    c. moisture.

    4. It was determined that:

    a. The base for the seed weight of 2500 paspalum was 1.6 g

    b. Caryopses with less than ½ endosperm development have no planting value

    c. OBP is approximately 2.2 m/s.

    1 AnswerWords & Wordplay8 years ago
  • Can you rewrite these sentences?

    1. The effects of salinity on seashore paspalum were studied by the agricultural scientists who were interested in developing new grasses for golf courses.

    2. In 1956, Yang and Lee predicted that the spin of particles, on theoretical grounds, emerging from beta decay events would show a slight preference for one direction over another.

    3. The first evidence of the existence of genes did not appear until1866, eight years after Darwin was obliged to publish The Origin of Species, when the Moravaian monk Gregor Mendel published the results of his extensive experiments with green peas in the garden of an Augustinian monastery—results that demonstrated the requisite persistence of the quanta of heredity—and Mendel’s findings were in any event universally ignored until attention was called to them in 1900, by which time Darwin was dead.

    4. Caymanians depended on their watercraft and nautical skills to communicate and for transportation, not only between the islands, but with the outside world.

    1 AnswerWords & Wordplay8 years ago
  • Help on Equilibrium Constant?

    I don't know what I'm doing wrong,

    The reverse chemical rxn A + B <--> C + D

    has the following equilibrium constant

    Kc = ([C] [D]) / ([A] [B]) = 3.5

    Initially, only A and B are present, each at 2.00 M. What is the

    final concentration of A once equilibrium is reached?

    1. Initially, only A and B are present, each at 2.00 M . What is the final concentration of A once equilibrium is reached?

    2. What is the final concentration of D at equilibrium if the initial concentrations are [A] = 1.00 M and [B] = 2.00 M?

    I got 1.3 M for D and its not correct

    1 AnswerChemistry8 years ago
  • I need help on ion movements in resting potential?

    at about -70 mV. Here are my answers

    a) voltage gated Na+ channel: closed

    b) voltage gated K+ channel: closed

    c) sodium potassium pump: Na+ out, K+ in

    d) nongated Na+ channel: Na+ out, K+ in

    e) nongated K+ channel: Na+ in, K+ out

    can anyone tell me which ions are going in and out of the cell for each channel? Thanks

    1 AnswerBiology8 years ago
  • I need help on ion movements in resting potential?

    at about -70 mV. Here are my answers

    a) voltage gated Na+ channel: closed

    b) voltage gated K+ channel: closed

    c) sodium potassium pump: Na+ out, K+ in

    d) nongated Na+ channel: Na+ out, K+ in

    e) nongated K+ channel: Na+ in, K+ out

    can anyone tell me which ions are going in and out of the cell for each channel? Thanks

    1 AnswerBiology8 years ago
  • A question on equilibrium constant?

    Do you agree with the following statement and why or why not?

    "For a given chemical system at equilibrium, the concentrations of each reactant may differ but the value of K should be the same (at a given temperature)." Give a mathematical example to support your answer.

    1 AnswerChemistry8 years ago
  • Mastering Bio question on inhalation and exhalation?

    So I got one more chance to get this question correct. Its a flowchart to identify the steps of inhalation and exhalation: Currently the steps I have are

    Inhalation

    1. Diaphragm and rib muscles contract

    2. Lung volume increases

    3. Air moves into nose and down trachea, bronchi, and bronchioles.

    4. Air enters alveoli

    5. Oxygen diffuses into blood; CO2 diffuses into alveoli.

    Exhalation

    6. Air moves out of alveoli

    7. Air moves up bronchioles, bronchi, and tranchea

    8. Air leaves nose or mouth

    9. Lung volume decreases

    10. Diaphragm and rib muscles relax

    I appreciate the help

    2 AnswersBiology8 years ago
  • Recommend long lasting earphone/headphones?

    I've gone through three earphones in the last 6 months. I used it often, on my phone, ipod, laptop. The ones I buy are usually 8-12 dollars so maybe its the get what you pay for type of deal. Anyone know where I can get some that are long lasting while paying a reasonable price? Thanks

    3 AnswersOther - Electronics8 years ago
  • Anyone think the NFL combine is overrated?

    best part of the combine I think would be the individual interviews. The game tapes is what matters in my opinion. Agree or disagree and why?

    3 AnswersFootball (American)8 years ago
  • What is the net ionic equation of the reaction of BeCl2 with NaOH?

    This is what I put:

    BeCl2 (aq) + 2OH-(aq) -> Be(OH)2 (s) + 2Cl- (aq) + 2Na+ (aq)

    its not correct

    1 AnswerChemistry8 years ago
  • Calculate the molarity of each of the following solutions.?

    12.74mg of KI in 107.8mL of solution

    answer in four sig figs.

    1 AnswerChemistry8 years ago
  • A chemist wants to make 5.0L of a 0.300M CaCl2 solution.?

    What mass of CaCl2 (in grams ) should the chemist use?

    express answer using two sig figs.

    I got 73.9 grams for the answer and 74 grams for sig fig and Its not correct.

    3 AnswersChemistry8 years ago
  • How many liters of softened water, have to be consumed to exceed the FDA recommendation?

    Water softeners often replace calcium ions in hard water with sodium ions. Since sodium compounds are soluble, the presence of sodium ions in water does not cause the white, scaly

    How many liters of softened water, containing a sodium concentration of 4.5×10^−2 sodium by mass, have to be consumed to exceed the FDA recommendation? (Assume a water density of 1.0 g/mL .)

    residues caused by calcium ions. However, calcium is more beneficial to human health than sodium because calcium is a necessary part of the human diet, while high levels of sodium intake are linked to increases in blood pressure. The U.S. Food and Drug Administration (FDA) recommends that adults ingest less than 2.4 of sodium per day.

    I got .0053 for the answer but doesn't seem right

    1 AnswerChemistry8 years ago
  • Determine each plant if its long day, short day, neutral, or cannot be determine?

    Plant A: flowers after a long night of uninterrupted darkness, flowers after a long night interrupted by a flash of red light followed by a flash of far-red light, flowers in spring

    Plant B: flowers after a short night of uninterrupted darkness, flowers after a long night of uninterrupted darkness, flowers after a long night interrupted by a flash of light, flowers after a long night interrupted by a flash of red light followed by a flash of far-red light, flowers in summer

    Plant C: flowers after a short night of uninterrupted darkness, flowers after a long night interrupted by a flash of light, flowers in summer

    Plant D: flowers after a long night of uninterrupted darkness, flowers after a long night interrupted by a flash of red light followed by a flash of far-red light, flowers in fall

    Plant E: flowers after a short night of uninterrupted darkness, flowers after a long night interrupted by a flash of light, flowers in spring

    Plant F: flowers after a short night of uninterrupted darkness, flowers after a long night of uninterrupted darkness, flowers after a long night interrupted by a flash of light, flowers after a long night interrupted by a flash of red light followed by a flash of far-red light, flowers in winter

    I assume plant B and F cannot be determine.

    1 AnswerBotany8 years ago
  • Write a general equation for the reaction of an alkali metal with a halogen.?

    Express your answer as a chemical equation. Identify all of the phases in your answer. Use M and X to represent alkali metal and halogen, respectively.

    1 AnswerChemistry8 years ago
  • Student wants to obtain 100 g of P. How many grams of 16-4-8 fertilizer should be acquired?

    another question: student obtains 10 g of 16-4-8 fertilizer. How many moles of P are present?

    1 AnswerChemistry8 years ago
  • Student wants to obtain 100 g of P. How many grams of 16-4-8 fertilizer should be acquired?

    another question: student obtains 10 g of 16-4-8 fertilizer. How many moles of P are present?

    1 AnswerHomework Help8 years ago